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Chinese Physics Letters

Efficient Quantum Secure Direct Communication with Authentication

刘文杰, 陈汉武, 李志强, 刘志昊

Published Jan 1, 2008• 0 citations
OpenAlex

Abstract

量的二个协议与认证指导通讯[Phys。加快。一 73 (2006 ) 042305 最近被显示对认证器 Trent 攻击不可靠[Phys。加快。一 75 (2007 ) 026301 ] 。我们在场由使用四泡利不相容原理操作的二个有效协议，它对象外部伊夫攻击一样的内部 Trent 攻击安全。最后，我们概括他们到多党的量方向通讯。

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Chinese Physics Letters•Jan 1, 2006•0 citations
量的二个协议与认证指导通讯[Phys。加快。一 73 (2006 ) 042305 最近被显示对认证器 Trent 攻击不可靠[Phys。加快。一 75 (2007 ) 026301 ] 。我们在场由使用四泡利不相容原理操作的二个有效协议，它对象外部伊夫攻击一样的内部 Trent 攻击安全。最后，我们概括他们到多党的量方向通讯。
Two efficient protocols of quantum secure direct communication with authentication [Chin. Phys. Lett. 25 (2008) 2354] were recently proposed by Liu et al. to improve the efficiency of two protocols presented in [Phys. Rev. A 75 (2007) 026301] by four Pauli operations. We show that the high efficiency of the two protocols is at the expense of their security. The authenticator Trent can reach half the secret by a particular attack strategy in the first protocol. In the second protocol, not only Trent but also an eavesdropper outside can elicit half-information about the secret from the public declaration.